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Name _______________________________________ Date __________________ Class __________________
Practice B
LESSON
2-4
Writing Linear Functions
Find the slope of each line.
1.
x
5
1
4
9
y
9
3
9
19
2.
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x
7
2
6
13
y
0.5
2
6
9.5
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Write the equation of each line in slope-intercept form.
3.
4.
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5.
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6. line passing through (3, 4)
1
with a slope of
5
7.
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3
2
8. line parallel to y   x  4
________________________
x
2
3
8
11
y
1
1.5
4
5.5
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9. line perpendicular to y  2x  11
and through (4, 2)
and through (1, 5)
________________________________________
________________________________________
Solve.
10. The pool at the Barnes Community Center is heated.
The table shows the temperature of the water at
various time intervals after the heater is turned on.
a. Express the temperature of the water as a
function of time.
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b. Find the temperature of the water after 12 hours.
Swimming Pool Heater
Time (h)
Temperature (T)
0
56°F
3
62°F
5
66°F
9
74°F
________________________________________
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
2-28
Holt Algebra 2
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
A18
Holt Algebra 2